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Finding the Fourth Proportional to 19,607.60, 29,411.40 and 19,413.20

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Solution

The fourth proportional to 19,607.60, 29,411.40 and 19,413.20 is: 29,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,607.60 : 29,411.40 = 19,413.20 : x
  2. Step 2: Convert to fraction form
    19,607.60/29,411.40 = 19,413.20/x
  3. Step 3: Cross multiply
    19,607.60x = 29,411.40 × 19,413.20
  4. Step 4: Simplify right side
    19,607.60x = 570,969,390.48
  5. Step 5: Solve for x
    x = 570,969,390.48/19,607.60
  6. Step 6: Final answer
    x = 29,119.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.